Sony has sent court orders to several users who hacked the PlayStation 3.

The firm filed complaints to GeoHot, fail0verflow and 100 other unnamed defendants after they broke through the console's security, allowing it to run custom firmware and homebrew software, according to Engadget (via VG247).

The court order said that the defendants "circumvented effective technological protection measures … employed by SCEA to protect against unauthorized access to and/or copying of … PlayStation 3 computer entertainment systems … and other copyrighted works."

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While Sony has yet to file a lawsuit for copyright infringement, it has issued temporary restraining orders to limit further information about the hack going online.

The system's security was broken last week, over four years after the PlayStation 3 was first released.